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@will3942
Last active June 11, 2024 12:17
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Reverse-Engineering Instagram
require 'openssl'
require 'base64'
require 'json'
require 'httpclient'
http = HTTPClient.new(:agent_name => useragent)
key = "" #The Private key
login_info = {:guid => "00000000-0000-0000-0000-000000000000",
:password => "PASSWORD",
:username => "USERNAME",
:device_id => "android-0000000000000000",
:_csrftoken => "missing"
}.to_json
signed_body = "#{Digest::HMAC.hexdigest(login_info, key, Digest::SHA256)}.#{login_info}"
post_data = {:signed_body => signed_body, :ig_sig_key_version => 4}
result = http.post("https://instagram.com/api/v1/accounts/login/", post_data, "Content-Type" => "application/json")
p result.body
const-string v5, "LOGGING"
invoke-static {v5, v0}, Landroid/util/Log;->d(Ljava/lang/String;Ljava/lang/String;)I
@edmund5
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edmund5 commented Feb 8, 2014

got an error: undefined variable or method "useragent"

@netics
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netics commented Feb 18, 2014

Unfortunately the Instagram app is closing after I hit the login button. No logs with "LOGGING" are sent.

Also, I didn't find the .line 70 in 5.0.6

@milesoberstadt
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Forgive my ignorance, but is there any chance you can post the private key? I can't seem to get the apk to recompile after making these changes...

@Lotogram
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Please post the private key, thanks.

@ydaniels
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ydaniels commented Oct 5, 2014

yea please anyone with the private key that can help

@oliverbytes
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This is the PRIVATE KEY b4a23f5e39b5929e0666ac5de94c89d1618a2916

but I am not sure if it's the same key for Instagram 6+

@ydaniels
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no they have changed it . the old one ain't working anymore

@mokhdzanifaeq
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KEY: 6d51fe001d37fae892bfd51b334cf2deaa66dc8822ff37e8d0f45e8883d56061
not sure the key is the same for everybody though. you can check it yourself : http://mokhdzanifaeq.github.io/extracting-instagram-signature-key/

@timigod
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timigod commented Jan 24, 2016

Can this be used to upload photos?

@endquote
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endquote commented Jun 12, 2016

Anyone figured this out on a more recent version? The above code returns "invalid domain". The instructions in the above article seem legit, but the APK has changed and I'm not sure where the relevant code is now. Also the ig_sig_key_version sent in requests now is 5, not 4.

@KiralyCraft
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This is for instagram 9.2.0:

012a54f51c49aa8c5c322416ab1410909add32c966bbaa0fe3dc58ac43fd7ede

@lucassimao
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@KiralyCarft I followed the article by @mokhdzanifaeq and I found this api key. After that, I intercepted the request body to https://i.instagram.com/api/v1/accounts/login/ . Basically, the request body is the following string URL encoded:

signed_body=6f0f090924943e8a25175dcf115d7ee7564a39510ac58e5569d8523c49ceeb22.{"phone_id":"5b5fe5f2-c491-435f-8a7c-a091edaa4a29","username":"lsimaocosta","guid":"6c55c4ed-2663-406e-bc5c-480dc0001507","device_id":"android-9e111627d07b847e","password":"<<mypassword>>","login_attempt_count":"0"}&ig_sig_key_version=4

After that, using the JSON content in the above string (starting with {"phone_id" ... and ending at "login_attempt_count":"0"} I tried to recover the hash using the following ruby code:

require 'openssl'
require 'base64'
require 'json'

key = "012a54f51c49aa8c5c322416ab1410909add32c966bbaa0fe3dc58ac43fd7ede" #The Private key
digest = OpenSSL::Digest::SHA256.new
puts OpenSSL::HMAC.hexdigest( digest, key, << JSON_CONTENT>>)

but the hexdigest is not equal to the value of the hash sent in the request ... any thoughts ??

@eliasbagley
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Key for Instagram 9.6.0:
19054fe6bacb4e68bb243d12a6879941be86aeb672b0a7f79f1db8573957035d

and this worked for me to get the correct hash for following users, in bash:
JSON={"_csrftoken":"xxx","user_id":"xxx","_uid":"xxx","_uuid":"xxx"}
Put in whatever values are yours, from sniffing the API

alias urlencode='python -c "import sys, urllib as ul; \
    print ul.quote_plus(sys.argv[1])"'

SIGNED_BODY=$(echo -n $JSON | openssl dgst -sha256 -hmac $KEY).$(urlencode $JSON)"&ig_sig_key_version=4"

@drawrowfly
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Was anyone able to extract key from 10.0.1 ?

@drawrowfly
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Never mind just did it my self

@Mariusio
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Mariusio commented Dec 9, 2016

@glazkoman can you post it? Also, do you have a working example to post images?

@Trewqa
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Trewqa commented Dec 25, 2016

@Maarius Did you get it?

@Coldz0
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Coldz0 commented Feb 9, 2017

Anyone got the key for instagram 10.x ? Thanks in advance

@TonyDaniels
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Anyone have the key?

@wondersoftwares671
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Anyone found key for 10.9 or later? If anyone has, Please give me i need it.

@alitoufighi
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This is what Instagram-API by mgp25 used (it works):
0443b39a54b05f064a4917a3d1da4d6524a3fb0878eacabf1424515051674daa

@remon
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remon commented Nov 29, 2017

not working anymore , does anyone still working with him this method ?

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